Measurement Instruments Quiz

What is the definition of measurement?

• The process of collecting data

• The process of comparing a physical quantity with a standard

• The act of recording observations

• None of the above

Which of the following is NOT a classification of instruments?

• Absolute instruments

• Secondary instruments

• Tertiary instruments

• Recording instruments

Which characteristic of measuring instruments refers to the degree of closeness of a measurement to its true value?

• Sensitivity

• Accuracy

• Precision

• Resolution

If the true value of a quantity is 100 units and the measured value is 95 units, what is the percentage error?

• 5%

• 10%

• 5.26%

• 4.76%

What are the essential forces in a measuring instrument?

• Operating, deflecting, and controlling forces

• Deflecting, damping, and controlling forces

• Operating, damping, and friction forces

• Controlling, repelling, and operating forces

Which type of instrument uses a permanent magnet and a moving coil for measurement?

• MI instrument

• PMMC instrument

• Digital instrument

• Dynamometer type

What is the primary advantage of MI instruments?

• Can measure both AC and DC

• High sensitivity

• Low cost

• Compact design

Which wattmeter is suitable for measuring power in low power factor circuits?

• Induction type

• Dynamometer type

• Electrostatic type

• Low power factor wattmeter

What is the function of creep compensation in an energy meter?

• To adjust phase errors

• To prevent unwanted rotation of the disc

• To increase sensitivity

• To reduce friction

What type of meter is commonly used to measure energy in homes?

• Dynamometer type wattmeter

• Induction type energy meter

• Digital multimeter

• Megger